英語知識點(diǎn)

　　行為動(dòng)詞的變化。

　　肯定句：主語+動(dòng)詞原形(+其它)。

　　否定句：主語+ don't( doesn't ) +動(dòng)詞原形(+其它)。

　　如：I like bread. I don't like bread.

　　當(dāng)主語為第三人稱單數(shù)時(shí)，要用doesn't構(gòu)成否定句。

　　如：He ofter plays football.

　　He doesn't often play football.

　　一般疑問句：Do( Does ) +主語+動(dòng)詞原形+其它。(句首加助動(dòng)詞do, does)

　　如：I often play football.

　　- Do you often play football?

　　- Yes, I do. / No, I don't.

　　當(dāng)主語為第三人稱單數(shù)時(shí)，要用does構(gòu)成一般疑問句。

　　如：She goes to school by bike.

　　- Does she go to school by bike?

　　- Yes, she does. / No, she doesn't.

　　特殊疑問句：疑問詞+一般疑問句。

　　如：She goes to school by bike.

　　Does she go to school by bike?

　　How does she go to school?

　　動(dòng)詞+s的變化規(guī)則

　　1.一般情況下，直接加-s，如：cook-cooks, milk-milks

　　2.以s. x. sh. ch. o結(jié)尾，加-es，如：guess-guesses, wash-washes, watch-watches, go-goes

　　3.以“輔音字母+y”結(jié)尾，變y為i, 再加-es，如：study-studies

　　現(xiàn)在進(jìn)行時(shí)

　　1.現(xiàn)在進(jìn)行時(shí)表示現(xiàn)在正在進(jìn)行或發(fā)生的動(dòng)作，也可表示當(dāng)前一段時(shí)間內(nèi)的活動(dòng)或現(xiàn)階段正在進(jìn)行的動(dòng)作。(句中一般含有now, look, listen.)

　　2.現(xiàn)在進(jìn)行時(shí)的肯定句基本結(jié)構(gòu)為be+動(dòng)詞ing.

　　如：Tom is reading books in his study .

　　3.現(xiàn)在進(jìn)行時(shí)的否定句在be后加not。

　　如：Tom is reading books in his study .

　　Tom is not reading books in his study .

　　4.現(xiàn)在進(jìn)行時(shí)的一般疑問句把be動(dòng)詞調(diào)到句首。

　　如：Tom is reading books in his study .

　　Is Tom reading books in his study ?

　　5.現(xiàn)在進(jìn)行時(shí)的特殊疑問的基本結(jié)構(gòu)為：疑問詞+一般疑問句?

　　(注意：當(dāng)劃線部分包含謂語動(dòng)詞時(shí)，用疑問詞代替劃線部分放到句首，原劃線處應(yīng)加上doing)

　　如：Tom is reading books in his study .

　　Tom is reading books in his study .

　　Is Tom reading books in his study ?

　　Is Tom reading books in his study ?

　　What is Tom doing in his study?

　　Where is Tom reading books?

　　動(dòng)詞加ing的變化規(guī)則

　　1.一般情況下，直接加ing，如：cook-cooking

　　2.以不發(fā)音的e結(jié)尾，去e加ing，如：make-making, taste-tasting

　　3.如果末尾是輔音字母加一個(gè)元音字母和一個(gè)輔音字母，雙寫末尾的輔音字母，再加ing，如：run-running, stop-stopping